Can primary key have primitive values?

[Puneet Vashisht]

Hi guyz

With CMP enitity beans we have to assign a primary key. Now i can definitely store primitive values in the fields. Like i may have a field count and declare it int type. So question is that can i also make count as my primary key. Does it alwayz have to be a class, cant i use primitive values in it.

Thankz,
Puneet

[Micheal Jacob]

Hi,

PK cannot be primitive type.
Anyway you can use wrapper classes.

Micheal.

[B.Sathish]

you cannot return null from the ejbCreate() of a CMP bean if its return type is int, can you?

[Mikalai Zaikin]

For container-managed persistence, a primary key class must meet the following requirements:

* The access control modifier of the class is public.
* All fields are declared as public.
* The fields are a subset of the bean's persistent fields.
* The class has a public default constructor.
* The class implements the hashCode() and equals(Object other) methods.
* The class is serializable.